package com.mashibing.juc.c_020_Interview;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.locks.LockSupport;

/**
 * @author: Yuanzt
 * @Date: 2021/3/29
 */
public class T07_LockSupport_WithoutSleep {

    // 添加volatile，使t2能够得到通知
    volatile List lists = new ArrayList();

    static Thread t1 = null ,t2 = null;

    public void add(Object o) {
        lists.add(o);
    }

    public int size() {
        return lists.size();
    }

    public static void main(String[] args) {
        T07_LockSupport_WithoutSleep c = new T07_LockSupport_WithoutSleep();

        t1 = new Thread(()->{
            System.out.println("t1 启动");
            for (int i = 0; i < 10; i++) {
                c.add(new Object());
                System.out.println("add " + i);
                if (c.size() == 5){
                    LockSupport.unpark(t2);
                    LockSupport.park();
                }
            }
        },"t1");

        t2 = new Thread(()->{
            System.out.println("t2 启动");
            LockSupport.park();
            System.out.println("t2 结束");
            LockSupport.unpark(t1);
        });

        t2.start();
        t1.start();

    }

}
